Točno: 8 + 5 = 13, 7 + 7 = 14, 10 + 7 = 17, 9 + 2 = 11, 10 + 9 = 19, 20 - 5 = 15, 10 + 5 = 15, 8 + 3 = 11, 9 + 7 = 16, 19 - 6 = 13, 17 - 6 = 11, 11 - 1 = 10, 9 + 6 = 15, 7 + 8 = 15 , 15 - 6 = 9, Netočno: 8 + 5 = 15, 7 + 7 = 16, 10 + 7 = 10, 9 + 2 = 18, 10 + 9 = 20, 18 - 3 = 14, 13 - 2 = 12, 8 + 2 = 12, 18 - 2 = 17, 10 + 3 = 12, 11 - 1 = 9, 12 + 3 = 5, 7 + 7 = 15, 14 - 3 = 10, 18 - 8 = 9,

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